Create a read-only memory-mapped file : FileChannel « File Input Output « Java






  1. Java
  2. File Input Output
  3. FileChannel

Create a read-only memory-mapped file

    
import java.io.File;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class Main {
  public static void main(String[] argv) throws Exception {
    File file = new File("filename");
    // Create a read-only memory-mapped file
    FileChannel roChannel = new RandomAccessFile(file, "r").getChannel();

    ByteBuffer readonlybuffer = roChannel.map(FileChannel.MapMode.READ_ONLY, 0, (int) roChannel
        .size());


  }
}








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